From 5a7dbf03ef3f1643b5cd66df5c9b29106b195750 Mon Sep 17 00:00:00 2001
From: Radoslaw Zarzynski <rzarzyns@redhat.com>
Date: Mon, 9 Sep 2019 15:40:58 +0200
Subject: [PATCH] crimson: facilitate errorator extending with new errors.

Signed-off-by: Radoslaw Zarzynski <rzarzyns@redhat.com>
---
 src/crimson/common/errorator.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/crimson/common/errorator.h b/src/crimson/common/errorator.h
index 3a639c2a7ba..b3b7cddc575 100644
--- a/src/crimson/common/errorator.h
+++ b/src/crimson/common/errorator.h
@@ -293,6 +293,11 @@ struct errorator {
     }
   };
 
+  // get a new errorator by extending current one with new error
+  template <class... NewWrappedAllowedErrorsT>
+  using extend = errorator<WrappedAllowedErrorsT...,
+                           NewWrappedAllowedErrorsT...>;
+
 private:
   struct ignore_marker_t{};
 
-- 
2.39.5